Are contact lenses different sizes?
Contacts come in a variety of sizes, and the doctor will need to measure your eyes to get the right fit. The size will also depend on the type of lenses you want. The most common are soft lenses and RGP,or Rigid Gas Permeable lenses (read our RGP article here).
How do you know what size contact lenses to get?
Generally, your eye doctor will use a keratometer to measure the curve of your cornea, which is the front surface of the eyes – where contacts rest. These numbers help to determine the lens diameter and base curve that appear on your contact lenses prescription.
What is the normal size of contact lens?
The diameter of regular contact lenses that are sold in the United States are on average 14mm–16mm. Similar to the diameter of regular contact lenses, circle lenses have no more than 15mm diameter since larger sizes would be harmful to the eyes at daily wear.
What happens if you wear the wrong size contacts?
It is not recommended to wear contact lenses with a different diameter from your prescription. If the diameter is too wide, the lens will be loose in the eye and may slip out of place. If the diameter is too small, the lens will have a tight fit, causing discomfort.
How do you know if your contact fits right?
In order to assure that the fitting curve of the lens properly fits the curve of your eye, your doctor will measure the curvature of the cornea or front surface of the eye. The curvature is measured with an instrument called a keratometer to determine the appropriate curve for your contact lenses.
Are colored contacts one size fits all?
They are not “one size fits all.” An eye doctor (ophthalmologist or optometrist) must measure each eye to properly fit the lenses and evaluate how your eye responds to contact lens wear.
Do different brands of contacts fit differently?
Different brands of contact lenses feel differently, fit differently on your eyes, and most definitely can affect your vision. Most of the time, the doctor will check your eyes, note the curvature of your eyes, and based on the exam, will recommend and then fit you with a certain brand of contact lenses.
How important is diameter in contact lenses?
It’s very important because it shows in which part of your eye the edges of the contact lens will rest. If the diameter is wrong, too small or too large it wont be stable on your eye and move around too much or it can be too tight and cause eye irritation and corneal abrasions.
What is BC and DIA on contacts?
BC – Base Curve (usually a number between 8 and 10) DIA – Diameter (usually a number between 13 and 15) Brand – The brand/type of contact lens that your doctor has fitted you for.
What are the best contact lenses?
Acuvue Oasys.
What is the best brand of contact lens?
Still, silicone hydrogel lenses are the most commonly used contact lenses on the market, and they may be the healthiest lenses for your dry eyes. Some of the best contact lenses for dry eyes on the market include Dailies Total1 and Acuvue Oasys 1-Day.
Do contact lenses only come in one size?
Contact lenses need to be fit to each individual’s eyes. There isn’t a one-size-fits-all lens. Each lens can act differently. Even if it fits on the eye initially, it may change once the lens dries out a little bit or once it’s been worn for a few hours.
What are the dimensions of a contact lens?
Technical boring version: Abbreviated “dia,” the diameter of a lens measures the width of a lens in millimeters, from end to end. The average size of a contact lens is between 13.5 and 15 millimeters.